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 * are permitted provided that the following conditions are met:
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 *   and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright notice, this list of
 *   conditions and the following disclaimer in the documentation and/or other materials provided
 *   with the distribution.
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 *   promote products derived from this software without specific prior written permission.
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 * - All of the icons, pictures, logos and other images that are provided with the source code
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 *   shall not be redistributed to any third party or modified in any way.
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package com.st.BlueMS.demos.Audio.Utils;

import android.media.AudioTrack;

import java.io.IOException;
import java.io.OutputStream;

/**
 * Class containing an audio buffer
 */
public class AudioBuffer {

    private int mSamplingRate;

    private short mData[];
    private int mLastWriteData;

    public AudioBuffer(int samplingRate, int maxLengthSec){
        mSamplingRate=samplingRate;
        mData = new short[samplingRate*maxLengthSec];
        mLastWriteData=0;
    }

    public AudioBuffer(short[] sampleData,int samplingRate){
        mData=sampleData;
        mSamplingRate = samplingRate;
        mLastWriteData = sampleData.length;
    }

    public short[] getData() {
        return mData;
    }

    public int getSamplingRate() {
        return mSamplingRate;
    }

    public int append(short data[]){
        synchronized (this) {
            int size = Math.min(mData.length - mLastWriteData, data.length);
            System.arraycopy(data, 0, mData, mLastWriteData, size);
            mLastWriteData += size;
            return mLastWriteData;
        }
    }

    public boolean isFull() {
        return mData.length==mLastWriteData;
    }

    public int getBufferLength() {
        return mData.length;
    }

    public void writeLittleEndianTo(OutputStream out) throws IOException {
        synchronized (this) {
            for (int i = 0; i < mLastWriteData; i++) {
                short temp = mData[i];
                out.write(temp & 0x00FF);
                out.write(temp >> 8);
            }
        }
    }

    synchronized public void writeTo(AudioTrack out){
        out.write(mData,0,mLastWriteData);
    }
}
